This document provides guidelines for using abbreviations and acronyms in writing. It recommends writing out potentially unclear acronyms the first time used and using all capital letters with no periods for common acronyms. Abbreviations should only be used in addresses or as part of a formal name. Most postal abbreviations use two capital letters without periods. Names of days and months should be written out, while specific date and time abbreviations can be used. Titles should be abbreviated when used before a name. Latin abbreviations should be used sparingly.
